/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.addthis.hydra.job.spawn.search;

import java.util.HashSet;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class LineSearch {

    public static Set<TextLocation> search(String text, Pattern pattern) {
        Set<TextLocation> matchSet = new HashSet<>();
        String[] lines = text.split("\n");

        for (int lineNum = 0; lineNum < lines.length; lineNum++) {
            String line = lines[lineNum];
            Matcher m = pattern.matcher(line);
            while (m.find()) {
                matchSet.add(new TextLocation(lineNum, m.start(), m.end()));
            }
        }

        return matchSet;
    }
}
